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Free vs Pay Anti-Virus

Question

What’s the difference between free anti-virus programs and those that you pay for? Is the protection different or is it just the support?

- Matt

Answer

This question was answered on July 10, 2009.
Much of the information contained herein may have changed since posting.

Now more than ever, we’re all looking for ways to save money, but this area may not be in your best interest, depending upon who and how your computers are used.

Your question is about anti-virus (AV) programs, but the proper reference should really be anti-malware programs Viruses, Trojans and worms are dealt with by anti-virus programs, while spyware and adware are generally addressed by programs designed to detect and remove those types of malware, generally referred to as anti-spyware.

A proper defense will always include both of these types of programs, so I’ll address them separately.

With free anti-virus programs, you may notice that most of the companies that offer a free program also sell a commercial version of the same thing This clearly indicates that there is a difference and you would be correct to assume that support is one of the big differences.

With the free programs, support is limited to FAQs and in some cases e-mail support, but for the most part, you will have to rely on the rest of the Internet community for any detailed help Free programs are also only free for personal use (not businesses, although a few companies are playing with this concept).

At the core of paid & free AV programs, the basic anti-virus engine is the same; they search for ‘signatures’ of known virus code to detect and remove infections If you are a fairly contentious surfer, don’t engage in activities such as file sharing, warez cracks, adult content, online gambling or other high-risk behaviors, the basic free protection is likely to be adequate.

The ‘signature’ updates are generally the same, although some companies offer them less frequently for the free vs the pay versions.

The real difference in most cases is the sophistication level of additional protection against the newest types of exploits Signature based AV programs can only update signatures once a new strain is discovered That means, until the new threat has been discovered, a new signature string has been developed and you download it to your computer, you won’t be protected against the new threat.

Most higher-level AV programs incorporate both signature level detection and behavioral analysis to help spot new threats for which there are no signatures because ‘obfuscation’ code (to confuse signature based AV) is a common practice with malware writers In addition, many free programs don’t have much if any protection against the growing threat of ‘root-kits’ (more at http://www.datadoctors.com/help/columns/17276 ).

When it comes to protecting yourself against adware and spyware threats, the parameters are a little different Unlike AV programs, which you can only have one installed, anti-spyware programs can co-exist and provide a better blanket of protection.

One of the differences that can be significant in the anti-spyware arena is the proactive vs reactive protection Most pay versions of anti-spyware have a more sophisticated ‘proactive’ component that helps prevent ever getting infected in the first place Many of the free programs aren’t that good at preventing the spyware from getting into your computer, but they are very good at detecting and removing once you are infected.

Installing a pay version with good prevention capabilities along with a couple of the free programs gives you the best of both worlds No single anti-spyware program is capable of detecting and removing everything on the Internet, so by periodically running scans from several programs, you will have a better chance of keeping your computer cleaner (there is no way to avoid some of the digital ‘grime’ if you are going to be on the Information Superhighway).

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